By Māni Dunlop and Te Aniwa Hurihanganui of RNZ
Ngāpuhi leader Sonny Tau has resigned as the chairman of Te Rūnanga ā iwi o Ngāpuhi.
The 66-year-old was also the leader of Tūhoronuku.
A rūnanga spokesperson has confirmed he has resigned.
A spokesperson for Te Tai Tokerau MP Kelvin Davis said Tau's resignation was a matter for the rūnanga and he would not be commenting.